Horizontal wet-type negative pressure dust filter

Abstract

The utility model relates to the technical field of negative-pressure dust filters, and discloses a horizontal wet-type negative-pressure dust filter which comprises a fixed support, and the fixed support is provided with a nozzle assembly, a first-stage mist disperser, a second-stage flow mixer, a dewatering cavity, a third-stage dewaterer, a self-closing blow-down valve, a damping hose and a centrifugal fan. The fixing support is fixedly connected with a centrifugal fan fixing supporting frame. According to the utility model, the stability of gas flow is enhanced, the efficiency of water mist dust removal is improved, dust-containing water mist can be better settled, the phenomena of water emission and dust emission at the air outlet are reduced, and the water drainage groove with the high right part and the low left part is arranged at the bottom of the dewatering cavity, so that dust-containing gas is not easy to swirl in the cavity, and flow removal and pollution discharge can be better realized; and the self-closing exhaust valve is additionally arranged, so that the air leakage rate of the dust filter in the pollution discharge process is ensured, the atmosphere cannot flow back into the dewatering cavity, and the phenomenon that airflow in the dust filter is disordered due to atmosphere backflow is completely eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure dust collectors, in particular to a horizontal wet negative pressure dust collector. Background Art

[0002] With the rapid development of industrialization, the problems of dust and harmful gas emissions generated in various production processes are becoming increasingly serious, posing a serious threat to the environment and human health. Especially in industries such as metallurgy, building materials, chemical engineering, electric power, mines, food, medicine, and electronics, there are various types of dust and pollutants generated during the production process, and the treatment is difficult.

[0003] The existing technologies have the following deficiencies: water and dust emerge from the air outlets of existing equipment, and the separation effect is poor. Moreover, most dust collectors on the market use axial fans. Since the equipment is installed in the dust collector cavity, dust particles continuously beat the main body of the fan, resulting in an extremely short service life of the equipment. In addition, the cyclone and the dehydrator do not distinguish the swirling direction, there is no reverse air flow, and the dehydration is not thorough. Also, the wind speed in the dehydration cavity of existing equipment is high, and the dust-containing gas is not easy to settle. The drainage tank does not have a staggered height, and it is not easy to dehydrate. Therefore, it is necessary to design a horizontal wet negative pressure dust collector. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a horizontal wet negative pressure dust collector.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a horizontal wet negative pressure dust collector, including a fixed bracket, on which a nozzle assembly, a primary atomizer, a secondary mixer, a dehydration cavity, a tertiary dehydrator, a self-closing sewage valve, a shock-absorbing hose, and a centrifugal fan are provided. The fixed bracket is fixedly connected with a centrifugal fan fixed support frame, the centrifugal fan is arranged above the centrifugal fan fixed support frame, and a staggered separation cavity is arranged inside the dehydration cavity.

[0006] As a further description of the above technical scheme:

[0007] The centrifugal fan is fixedly connected with a shock-absorbing hose, and one end of the shock-absorbing hose is fixedly connected to the dehydration cavity.

[0008] As a further description of the above technical scheme:

[0009] The tertiary dehydrator is arranged inside the dehydration cavity, and the self-closing sewage valve is arranged at the lower end of the dehydration cavity.

[0010] As a further description of the above technical scheme:

[0011] The secondary mixer is arranged inside the dehydration cavity, and the primary atomizer is arranged in front of the secondary mixer.

[0012] As a further description of the above technical solution:

[0013] The nozzle assembly is arranged at the front end of the primary mist disperser, and the primary mist disperser is arranged between the nozzle assembly and the secondary flow mixer.

[0014] As a further description of the above technical solution:

[0015] The three-stage dehydrator is fixedly arranged on the right side of the dehydration chamber, and the two-stage flow mixer is fixedly arranged on the left side of the dehydration chamber.

[0016] As a further description of the above technical solution:

[0017] The secondary flow mixer is provided with a right-handed flow guide groove having no less than 18 blades, the tertiary dehydrator is a left-handed flow guide groove, and a drainage groove is provided at the bottom of the dehydration chamber.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the guide blades of the secondary cyclone (right-hand rotation) and the tertiary dehydrator (left-hand rotation) are reverse guide grooves, which enhance the counteraction of gas flow, improve the efficiency of water mist dust removal, and allow the dust-containing water mist to settle better, reducing the occurrence of water and dust emission at the air outlet. A drainage groove with a higher right and a lower left is provided at the bottom of the dehydration chamber, so that the dust-containing gas is not easy to swirl in the chamber, and can be better de-flowed and discharged. A self-closing discharge valve is added to ensure the air leakage rate of the dust filter during the discharge process, and the atmosphere cannot flow back into the dehydration chamber, thereby preventing the occurrence of air flow turbulence in the dust filter caused by atmospheric reflux. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a horizontal wet negative pressure dust filter proposed by the utility model;

[0021] Figure 2 A schematic diagram of the local structure of a horizontal wet negative pressure dust filter proposed by the utility model Figure 1 ;

[0022] Figure 3 A schematic diagram of the local structure of a horizontal wet negative pressure dust filter proposed by the utility model Figure 2 ;

[0023] Figure 4 A schematic diagram of the local structure of a horizontal wet negative pressure dust filter proposed by the utility model Figure 3 .

[0024] Legend:

[0025] 1. Nozzle assembly; 2. Primary atomizer; 3. Secondary mixer; 4. Dehydration chamber; 5. Tertiary dehydrator; 6. Self-closing sewage valve; 7. Shock-absorbing hose; 8. Centrifugal fan; 9. Step-height separation chamber; 10. Fixed bracket; 11. Centrifugal fan fixed support frame. Detailed implementation manner

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0027] Referring to Figures 1-4 , an embodiment provided by the present invention: a horizontal wet negative pressure dust collector, including a fixed bracket 10, on which there are a nozzle assembly 1, a primary atomizer 2, a secondary mixer 3, a dehydration chamber 4, a tertiary dehydrator 5, a self-closing sewage valve 6, a shock-absorbing hose 7 and a centrifugal fan 8. The fixed bracket 10 is fixedly connected with a centrifugal fan fixed support frame 11. The centrifugal fan 8 is arranged above the centrifugal fan fixed support frame 11. Inside the dehydration chamber 4, there is a step-height separation chamber 9. The centrifugal fan 8 is fixedly connected with a shock-absorbing hose 7. One end of the shock-absorbing hose 7 is fixedly connected to the dehydration chamber 4. The tertiary dehydrator 5 is arranged inside the dehydration chamber 4. The self-closing sewage valve 6 is arranged at the lower end of the dehydration chamber 4. The secondary mixer 3 is arranged inside the dehydration chamber 4. The primary atomizer 2 is arranged at one end of the secondary mixer 3. The nozzle assembly 1 is arranged at one end of the primary atomizer 2. The primary atomizer 2 is arranged between the nozzle assembly 1 and the secondary mixer 3. The tertiary dehydrator 5 is fixedly arranged on the right side of the dehydration chamber 4. The secondary mixer 3 is fixedly arranged on the left side of the dehydration chamber 4. The primary atomizer 2 is provided with at least 18 right-handed guide grooves for fan blades. The tertiary dehydrator 5 is a left-handed guide groove. The bottom of the dehydration chamber 4 is provided with a drainage groove, which enhances the stability of gas flow, improves the efficiency of water mist dust removal, and enables the dust-containing water mist to settle better, reducing the occurrence of water and dust leakage at the air outlet. By providing a drainage groove with a higher right side and a lower left side at the bottom of the dehydration chamber 4, the dust-containing gas is not easily swirled in the chamber, enabling better de-swirl and sewage discharge, and ensuring the tightness of the sewage discharge process, preventing the leakage and secondary pollution of wastewater.

[0028] Working principle: First, the horizontal wet negative pressure dust filter is mainly composed of key components such as a fixed bracket 10, a nozzle assembly 1, a primary mist disperser 2, a secondary mixer 3, a dehydration chamber 4, a tertiary dehydrator 5, a self-closing drain valve 6, a shock-absorbing hose 7, a centrifugal fan 8 and a centrifugal fan fixed support frame 11. After the equipment is started, the centrifugal fan 8 starts to work to generate a negative pressure environment. Under the action of negative pressure, the dust-containing gas is sucked into the equipment, and the nozzle assembly 1 sprays out fine water mist, which is preliminarily mixed with the dust-containing gas, so that the large particles of dust are moistened and preliminarily settled to the primary mist disperser 2. The large particles of water mist are discharged from the sewage trough, and the large particles of water mist are blown to the primary mist disperser 2. The primary mist disperser 2 breaks up the large particles of water mist into small particles of water mist. The small particles of water mist can be better mixed with the remaining small particles of dust to the secondary mixer 3. The secondary mixer 3 is provided with no less than 18 right-handed guide trough blades. These blades enhance the gas flowability and improve the filtering wind speed, so that the dust particles and water mist are more fully contacted and mixed. Then, the gas enters the dehydration chamber 4. The volume of the dehydration chamber 4 becomes larger, the filtering wind speed is reduced, and the dust is better settled here. The dust-containing gas is right-handed due to the front section of the second stage. The wind direction is right-handed at this moment. The right-handed whirlwind collides with the left-handed three-stage dehydrator 5 in the wind direction countercurrent. The dust-laden wind will diffuse to the four walls of the dehydration chamber. The dehydration chamber 4 is a staggered separation chamber. The dust-laden wind swirls along the four walls of the dehydration chamber. When the swirl hits the high side, the dust-laden gas cannot swirl the next time due to the change of air flow velocity and the action of gravity, so that most of the water-dust mixture in the gas can be settled. Occasionally, the remaining water-dust mixture passes through the water tank baffle of the three-stage dehydrator 5 and cannot swirl, so that all the dust-laden water slides to the drainage tank and passes through. The purified gas is finally discharged from the equipment through the centrifugal fan 8. The centrifugal fan 8 is connected to the dehydration chamber 4 through the shock-absorbing hose 7. The shock-absorbing hose 7 not only reduces the vibration and noise during the operation of the fan, but also ensures the stability of the gas flow. At the same time, a drainage trough and a self-closing drain valve 6 are provided at the bottom of the dehydration chamber 4. The drainage trough is used to collect and discharge the waste water generated during the operation of the equipment, and the self-closing drain valve 6 ensures the air leakage rate of the dust filter during the discharge process. The atmosphere cannot flow back into the dehydration chamber 4, thereby preventing the occurrence of air flow turbulence in the dust filter caused by atmospheric reflux.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal wet negative pressure dust collector, comprising a fixed bracket (10), characterized in that: The fixed bracket (10) is provided with a nozzle assembly (1), a primary fog diffuser (2), a secondary mixer (3), a dehydration chamber (4), a tertiary dehydrator (5), a self-closing sewage discharge valve (6), a shock-absorbing hose (7) and a centrifugal fan (8). The fixed bracket (10) is fixedly connected with a centrifugal fan fixed support frame (11). The centrifugal fan (8) is arranged above the centrifugal fan fixed support frame (11). An offset separation chamber (9) is arranged inside the dehydration chamber (4).

2. The horizontal wet negative pressure dust collector according to claim 1, wherein: The centrifugal fan (8) is fixedly connected with a shock-absorbing hose (7). One end of the shock-absorbing hose (7) is fixedly connected to the dehydration chamber (4).

3. The horizontal wet negative pressure dust collector according to claim 2, characterized in that: The tertiary dehydrator (5) is arranged inside the dehydration chamber (4). The self-closing sewage discharge valve (6) is arranged at the lower end of the dehydration chamber (4).

4. The horizontal wet negative pressure dust collector according to claim 3, characterized in that: The secondary mixer (3) is arranged inside the dehydration chamber (4). The primary fog diffuser (2) is arranged in front of the secondary mixer (3).

5. The horizontal wet negative pressure dust collector according to claim 4, characterized in that: The nozzle assembly (1) is arranged in front of the primary fog diffuser (2). The primary fog diffuser (2) is arranged between the nozzle assembly (1) and the secondary mixer (3).

6. The horizontal wet negative pressure dust collector according to claim 5, wherein: The tertiary dehydrator (5) is fixedly arranged on the right side of the dehydration chamber (4). The secondary mixer (3) is fixedly arranged on the left side of the dehydration chamber (4).

7. The horizontal wet negative pressure dust collector according to claim 6, characterized in that: The secondary mixer (3) is provided with a right-handed diversion groove with no less than 18 blades. The tertiary dehydrator (5) is a left-handed diversion groove.

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